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taurus [48]
3 years ago
7

The boiling point (at atmospheric pressure) of Ammonia is -28 1/10°F and of Propylene is -53 9/10°F. What is the difference in t

heir boiling points?
-82°F

26°F

25 4/5°F

-81 4/5°F
Mathematics
1 answer:
Kay [80]3 years ago
3 0
I think it's 25 4/5 F
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GIVE CORRECT ANS FOR BRAINLIEST
gizmo_the_mogwai [7]
<h3>Solution:</h3>

2 \frac{5}{6} - 2 \frac{1}{2}  \\  =  \frac{17}{6}  -  \frac{5}{2}   \\  =  \frac{17 - 15}{6}  \\  =  \frac{2}{6}  \\  =  \frac{1}{2}

<h3>Answer:</h3>

\frac{1}{2}

Hope it helps.

Do comment if you have any query.

7 0
2 years ago
Read 2 more answers
An ice cube is melting, and the lengths of its sides are decreasing at a rate of 0.8 millimeters per minute At what rate is the
julia-pushkina [17]

Answer:

The rate of decrease is: 43.2mm^3/min

Step-by-step explanation:

Given

l = 18mm

\frac{dl}{dt} = -0.8mm/min ---- We used minus because the rate is decreasing

Required

Rate of decrease when: l = 18mm

The volume of the cube is:

V = l^3

Differentiate

\frac{dV}{dl} = 3l^2

Make dV the subject

dV = 3l^2 \cdot dl

Divide both sides by dt

\frac{dV}{dt} = 3l^2 \cdot \frac{dl}{dt}

Given that: l = 18mm and \frac{dl}{dt} = -0.8mm/min

\frac{dV}{dt} = 3 * (18mm)^2 * (-0.8mm/min)

\frac{dV}{dt} = 3 * 18 *-0.8mm^3/min

\frac{dV}{dt} = -43.2mm^3/min

<em>Hence, the rate of decrease is: 43.2mm^3/min</em>

8 0
3 years ago
Simplify pls with steps 2⁵ x 3⁴ x 5 / 3 x 16
Irina-Kira [14]
2^5 x 3^4 x 5 /3 x 16

(32*81*5)/3 * 16

(12960/3) * 16

4320 * 16

69120
8 0
2 years ago
Which percent is equivalent to ?
AleksAgata [21]
It would be 340%. First, you need to find out what the fraction is for 2/5. 2/5 as a decimal would be .4. Next you put that back with the three which is 3.4. After that, you need to turn that into a percentage by multiplying it by 100 which then equals 340. add the % to it and that gives you 340%.
3 0
3 years ago
Read 2 more answers
A customer buys five cans of baked beans, four packets of brown sugar and two packets of biscuits from a supermarket.He gives th
Naily [24]
Can of baked beans = x 
packet of brown sugar = y
packet of biscuit = z

5x + 4y + 2z = 150 - 26 ⇒ 5x + 4y + 2z = 124 is the total cost of all items.

can of baked beans = x = 1/2 of z
packet of sugar = y = z - 3

5(z/2) + 4(z-3) + 2z = 124
5z/2 + 4z - 12 + 2z = 124
5z/2 + 6z = 124 + 12
2(5z/2 + 6z) = 2(136)
5z + 12z = 272
17z = 272
z = 16 cost of a packet of biscuit.

x = 1/2 of z = 16/2 = 8 cost of a can of baked beans
y = z - 3 = 16 - 3 = 13 cost of a packet of sugar

5x + 4y + 2z = 124
5(8) + 4(13) + 2(16) = 124
40 + 52 + 32 = 124
124 = 124

8(8) + 1(13) + 6(16) = 64 + 13 + 96 = 173 total cost on question 3.
7 0
3 years ago
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